Fiber is that part of plant foods that your body can't digest or absorb. It is also referred to as roughage or bulk. "By classification, fiber is considered an indigestible carbohydrate," explains Dr. Elaine Rancatore of 2RHealth. But fiber is very different from other carbohydrates -- and much lower in calories!
Although fiber is not digestible, it is good for the body in many ways, says naturopathic physician Wendy Wells. "Eating fiber increases the immune system in your gut, feeds the good probiotic bacteria there, keeps the digestive lining healthy and absorbs and pulls out excess hormones, cholesterol, fat and toxins from the body."
"Many of the health problems we face start from a poor or sluggish digestion caused from built-up waste material in our colon," says Siv Sjholm, nutrition expert and founder of Success is Vitality. "Fiber helps us digest and pass the foods we eat. By increasing our fiber intake, we decrease the risks of common diseases such as cardiovascular disease, cancer, diabetes and obesity."
Fiber provides a number of very important health benefits, says nutrition and wellness coach Michelle Pfennighaus:
There are two types of dietary fiber, and you need both.
Insoluble fiber adds the bulk needed to clean out the colon and regulate bowel movements. This fiber, or roughage, acts like a sponge. As it absorbs water, it swells inside your intestine and produces a feeling of fullness. The insoluble fiber moves through the digestive system to remove waste, toxins and materials your body doesn't need.
Soluble fiber comes from fruit, some vegetables, brown rice, beans, barley peas, lentils, oats and bran. Soluble fiber mixes with water and digestive enzymes made by the liver to create a gel. This gel works chemically to prevent and reduce the body's absorption of substances that may be harmful. It is soluble fiber that helps control blood sugar and reduces cholesterol.
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